Suppose a spin-1/2 particle is in the state |χ⟩ = (1 + i)/√6 |↑⟩ + 2/√6 |↓⟩, where |↑⟩ and |↓⟩ represent the two eigenstates of Sz with eigenvalues of h/2 and -h/2, respectively. What is the probability of getting +h/2 if you measure Sz? Answer: A. 1/2 B. 1/3 C. 1/4 D. 2/√6